电力系统及其自动化学报2011，Vol.23Issue(6)：81-86,6.
LCL滤波并网逆变器的多速率采样数字控制
Digital Control of Grid-connected Inverter with LCL-filter Using Multi-rate Sampling Technique
谢俊虎 1赵莉华1
作者信息
- 1. 四川大学电气信息学院电气工程系,成都610065
- 折叠
摘要
Abstract
A digital control method is proposed on the basis of multi-rate output sampling (MROS) and dead-beat control technique to solve the shortcoming of multi-sensor and high switching frequency in the control design of grid-connected inverter with LCL-filter. Firstly, the discrete mathematic model and state predictive algorithm of grid-connected inverter with LCL-filter is deduced using MROS, and then state values of LCL-filter is predicted by state predictive algorithm, and finally the control input is computed by using deadbeat control with integral and optimal control. The state predictive algorithm can provide an output sampling interval control algorithm for the actual project implementation and accurately predict state values of LCL-filter, and reduce the number of sensors. Simulation results show that the system has good control performance and lower switching frequency.关键词
LCL滤波器/并网逆变器/多速率输出采样/数字控制/无差拍控制Key words
LCL-filter/grid-connected inverter/multi-rate output sampling/digital control/deadbeat control分类
信息技术与安全科学引用本文复制引用
谢俊虎,赵莉华..LCL滤波并网逆变器的多速率采样数字控制[J].电力系统及其自动化学报,2011,23(6):81-86,6.
